Anti-Scorification Oven

ABSTRACT

An anti-scorification oven has a combustion chamber having an ignition bar. A first feed rotor is provided in the combustion chamber and having one spiral sector at each end and a plurality of scorification nails in a middle thereof. A first motor is connected to the first feed rotor. A hopper is in communication with the feed inlet of the combustion chamber. A second feed rotor has a spiral sector thereon. A second motor has an output connected to the second feed rotor. A hearth is above and in communication with the combustion chamber.

CROSS-REFERENCE TO RELATED APPLICATIONS

Not Applicable

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable

INCORPORATION-BY-REFERENCE OF MATERIAL SUBMITTED ON A COMPACT DISC

Not Applicable

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to oven manufacturing, and more particularly, toan anti-scorification oven.

2. Description of Related Art

Oven is commonly used everyday furniture. A burning chamber is a corepart of an oven and a place where combustion occurs. A normal work of anoven comes from fuel burning in the burning chamber.

In a process of burning of all conventional ovens, fuel burns in theburning chamber. Since a high temperature in the burning chamber, ashesleft by the burning will scorifate in the burning chamber. After a longtime, the scorificated ash will jam inflation holes defined in theburning chamber. And the process of combustion will be affected.Therefore, conventional oven requires high standard fuels, which oftenare original wooden cores. Because original -wooden cores contains lessash and will not left a lot of ash after burning. A scorification incombustion will be decreased. However, the production of original woodencores needs a lot of wood which will cause destroy to circumstances. Anda cost of original wood is always high, which thus enhances a cost touse the oven. There are a lot of biomass fuels in our daily life such asstraw, sawdust, and crop stalks. However such fuels often contain a lotash and are liable to scorificated in combustion. At the same time, ahuge amount of biomass fuels are burn in wane every year, which not onlycause waste but also circumstance pollution.

Therefore, to provide an oven which is able to prevent scorification incombustion becomes a direction of search and development.

BRIEF SUMMARY OF THE INVENTION

The main object of the invention is to provide an ante-scorificationoven which is able to prevent ash to scorificated after combustion.

In order to accomplish the above objects, the present invention providesan anti-scarification oven having a combustion chamber having anignition bar. A first feed rotor is provided in the combustion chamberand having one spiral sector at each end and a plurality ofscorification nails in a middle thereof. One end of the first feed rotorpasses through a feed inlet of the combustion chamber and the other endthereof passing through an ash outlet of the combustion chamber. A firstmotor has an output connected to the first feed rotor. A hopper has afeed pipe at a bottom thereof and in communication with the feed inletof the combustion chamber. A second feed rotor is in the feed pipe andhas a spiral sector thereon. An end of the second feed rotor at the feedinlet is higher than an end of the first feed rotor at the feed inlet. Asecond motor has an output connected to the second feed rotor. A hearthis above and in communication with the combustion chamber.

Preferably, the anti-scorification nails are staggerly distributed inthe middle of the first feed rotor.

Preferably, the anti-scorification nails are in perpendicular withrespect to an axil of the first feed rotor.

Preferably, the ignition bar is disposed under a bottom of thecombustion chamber near the feed inlet thereof.

Preferably, a tank wall is provided surrounding the hearth, which withan outer surface of the hearth, defines a boiling water tank.

Preferably, the hearth is conical and an end having a smallercross-sectional area is connected to a top plate of theanti-scorification oven.

Preferably, a chimney is provided in communicate with the hearth andspirally passing across the boiling water tank.

Preferably, a plurality of air supply holes are defined in the hearthand an air supply chamber is formed on an outside surface of the hearthsurrounding the air supply holes.

Preferably, an exhaust blower is provided at an exit of the chimney, adust collection box is provided between the chimney and the exhaustblower, and a plurality of layers of dust collection nets are placed inthe dust collection box.

Preferably, the hopper is of cone shape and the second feed rotor isdisposed under the hopper.

These and other objectives, features, and advantages of the presentinvention will become apparent from the following detailed description,the accompanying drawings, and the appended claims.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a schematic plane view of the preferred embodiment of theinvention.

DETAILED DESCRIPTION OF THE INVENTION

An anti-scorification oven is provided in order to prevent scorificationafter combustion.

The preferred embodiment of the oven of the invention has an ignitionbar 2, a combustion chamber 1, a first feed rotor 6, a first motor 11 ahopper 5, a second feed rotor 3, a second motor 4, and a hearth 7.

The ignition bar 2 is provided in the combustion chamber 1 and forigniting fuels entered in the combustion chamber 1. The first feed rotor6 is provided in the combustion chamber 1 and has one spiral sector ateach end thereof. A plurality of scorification breaking nails 16 areformed in a middle of the first feed rotor 6. The first feed rotor 6 hasone end passing through a feed inlet of the combustion chamber 1 and theother end passing through an ash outlet of the combustion chamber 1. Thefirst motor 11 has an output connected to the first feed rotor 6. Thefirst feed rotor 6 rotates under a driving force from the first motor11. Under a driving force from the spiral sectors, the fuels enter thecombustion chamber 1 from the feed inlet. The hopper 5 has a feed pipe15 at a bottom thereof and in communication with the feed inlet of thecombustion chamber 1. The second feed rotor 3 is provided in the feedpipe 15. A spiral sector is provided on the second feed rotor 3. The endof the second feed rotor 3 at the feed inlet is higher than the end ofthe first feed rotor 6 at the feed inlet.

An output of the second rotor 4 is connected to one end of the secondfeed rotor 3 and for driving the second feed rotor 3 to rotate. Fuel isthus conveyed into the inlet of the combustion chamber 1 from the hopper5.

The hearth 7 is above and in communication with the combustion chamber1. High temperature gas and flame from the combustion in the combustionchamber 1 enter the hearth 7 and then exit the hearth 7 through a topthereof, from which an object 18 on a top plate 17 of the hearth 7 willbe heated.

The inlet of the combustion chamber 1 is in communication with a branch14 of the oven. The branch 14 is for supplying air to the combustionchamber 1 to support the burning of the fuel in the combustion chamber1.

A process of working of the anti-scorification oven of the invention isas follows.

Driven by the second motor 4, the second feed rotor 3 conveys the fuelin the hopper 5 to the inlet of the combustion chamber 1 via the feedpipe 15. The first motor 11 drives the first feed rotor 6 to send thefuel on the inlet of the combustion chamber 1 to the combustion chamber1. Air is supplied through the branch 14. The fuel burns in thecombustion chamber 1 and the high temperature gas and flame producedwill heat the object 18 placed on the top plate 17 through the hearth 7.In the process of burning, ash produced thereby will be pushed by thefuel newly entering the combustion chamber 1 to move towards the ashexit. The ash will be pushed to leave the ash exit by the first feedrotor 6. And in this process, the scorification breaking nails 16 rotatewith the first feed rotor 6 and stir the ash in the combustion. The ashis stirred up and pulpified, and scorification of the ash is thenprevented.

In the process of working of the oven of the invention, on one hand ashis stirred up in the process of combustion to prevent scorification in acircumstance of high temperature, and the ash is pulpified by theanti-scorification nails 16 to ensure a complete combustion of theincomplete combustion ash. And on the other hand, the ash is pushed tomove by newly entering fuel and exit the outlet by the push of the firstfeed rotor 6. The scorification caused by long time accumulation of ashin the combustion chamber 1 is then avoided. For the preferredembodiment, a phenomenon of scorification in the process of combustionis prevented and a lot a biomass fuel such as straw, sawdust, bark, andcrop stalks will be able to be used as fuel.

In the preferred embodiment of the anti-scorification oven, the inlet ofthe second feed rotor 3 near the combustion chamber 1 is higher than theend of the first feed rotor 6 near the inlet. There are many kinds ofrelationship between the positions of the first and the second feedrotors 6, 3. Preferably, the first feed rotor 6 is parallel to thesecond feed rotor 3, and the second feed rotor 3 is higher than thefirst feed rotor 6.

In this preferred embodiment, the anti-scorification nails 16 areprovided in the middle portion of the first feed rotor 6, i.e., in themiddle of the combustion chamber 1. Points of all anti-scorificationnails 16 are facing outward with respect to the first feed rotor 6. Asthe first feed rotor 6 rotates, the anti-scorification nails 16 stir upand pulpify the ash in the combustion chamber 1 to preventscorification. As a preferred resolution, all the anti scorificationnails 16 are in perpendicular with respect to an axil of the first feedrotor 6. And as a more preferred resolution, the anti-scorificationnails 16 are staggerly distributed in the middle of the first feed rotor6.

In the process of working, the anti-scorification oven of the inventionkeeps discharging ash to the exit of the combustion chamber 1. In orderto conveniently collect ash, an ash tray 9 is provided under the exit ofthe combustion chamber 1.

As a preferred resolution, the ignition bar 2 is disposed under a bottomof the combustion chamber 1 near the feed inlet thereof. In thisdispose, the fuel is able to be ignited as soon as it enters thecombustion chamber 1.

In this preferred embodiment, the hearth 7 is conical and an end havinga smaller cross-sectional area is an upper side. The upper side of thehearth 7 is connected to the top plate 17 of the hearth 7. The conicalshape of the hearth is able to make the flame more concentrated, and aheating efficiency to the object 18 on the top plate 17 is increased. Asa more preferred resolution, a plurality of air supply holes 72 aredefined in a wall of the hearth 7. An air supply chamber 71 is formed onan outside surface of the hearth 7 surrounding the air supply holes 72.An air supply pipe (not shown) is provided connecting an inlet of theair supply holes 72 and the branch 14. Air is supplied into the airsupply chamber 71 via the air supply pipe, and then enters the hearth 7through the air supply holes 72. The supply of air to the hearth 7, onone hand, is able to make the incompletely burned gas (such as carbonmonoxide) to combust completely to increase combustion efficiency. Onthe other hand, less incompletely burned gas will be discharged intoatmosphere. The dispose of the air supply holes 72 is able to furtherfocus the flame in the hearth 7. A temperature of the flame is thusenhanced and the heating efficiency to the object 18 on the top plate 17is able to be further increased.

As a preferred resolution, the air supply chamber 71 is circular andsurrounding a top portion of the hearth 7. The air supply holes 72 aredisposed on the top of the hearth 7. Air is supplied into the hearth 7from a variety of directions. The air supply is able to become morereplenish and the efficiency may be increased.

In this preferred embodiment of the anti-scorification oven, a tank wall10 is provided surrounding the hearth 7. A boiling water tank 101 isdefined by the tank wall 10 and an outer surface of the hearth 7. Wateris able to be poured into the boiling water tank 101 to absorb heat fromthe hearth 7. The use ratio of heat of the oven is increased. As a morepreferred resolution, the air supply pipe goes through the boiling watertank 101. The boiling water tank 101 is able to pre-heat the air supplypipe. When a temperature of the supplying air in the air supply pipebecomes higher, the combustion in the hearth 7 is able to be much moreimproved.

The afore-mentioned boiling water tank 101 is able to absorb and re-usethe heat giving out from the outer surface of the hearth 7. The heatedwater is ready for daily use, such as bathing, and room heating.

In the above embodiment, only the heat sent out from the outer surfaceof the hearth 7 is re-used. In the working process of the oven, smokeleaving a smoke exit in the top plate 17 still has a high temperatureafter passing the object 18. Such emission of smoke still causes wasteof a lot un-used heat. So, a chimney 8 is provided in communication withthe smoke exit and passing across the boiling water tank 101. The smokeexchanges heat with the water in the boiling water tank 101 via thechimney 8 and the heat therein will be able to be re-used. There aredifferent ways of deployment for the chimney 8 to pass across theboiling water tank 101. In order to increase heat exchanging area, thechimney 8 goes spirally across the boiling water tank 101 around thehearth 7. As a more preferred resolution, a plurality of heat emissionfins (not shown) are formed on the chimney 8, which will furtherincrease the heating exchanging area.

In this preferred embodiment, an exhaust blower 12 is provided at anexit of the chimney 8. A dust collection box 13 may be provided betweenthe chimney 8 and the exhaust blower 12. A plurality of layers of dustcollection nets (not shown) are placed in the dust collection box 13.There are lot of dust in the smoke going out from the chimney 8. Thedust must be collected by the dust collection nets in the dustcollection box 13 before entering the exhaust blower 12. The dustcollection box 13 is able to be processed termly to remove the dustbeing collected. The disposition of the dust collection box 13 is ableto diminish pollution to the atmosphere from the smoke exiting from thechimney 8.

In this embodiment, the hopper 5 is for containing the fuel and may beof any shape. Preferably, the hopper 5 is of cone shape. In a process offuel feeding, fuel is able to automatically fall to the exit of thehopper 5 under gravity and then be driven by the second feed rotor 3.

From above description, it is seen that the objects of the presentinvention have been fully and effectively accomplished. Embodiment ofthe invention has been shown and described for the purposes ofillustrating the functional and structural principles of the presentinvention and is subject to change without departure from theinvention's principles. Therefore, this invention includes allmodifications encompassed within the spirit and scope of the followingclaims.

1. An anti-scorification oven comprising: a combustion chamber having anignition bar, a first feed, rotor being provided in said combustionchamber and having one spiral sector at each end and a plurality ofscorification nails in a middle thereof, one end of said first feedrotor passing through a feed inlet of said combustion chamber and theother end thereof passing through an ash outlet of said combustionchamber, a first, motor having an output connected to said first feedrotor, a hopper having a feed pipe at a bottom thereof and incommunication with said feed inlet of said combustion chamber, a secondfeed rotor being in said feed pipe and having a spiral sector thereon,an end of said second feed rotor at said feed inlet being higher than anend of said first feed rotor at said feed inlet, a second motor havingan output connected to said second feed rotor, and, a hearth being aboveand in communication with said combustion chamber.
 2. Theanti-scorification oven as claimed in claim 1, wherein saidanti-scorification nails are staggerly distributed in said middle ofsaid first feed rotor.
 3. The anti-scorification oven as claimed inclaim 2, wherein said anti-scorification nails are in perpendicular withrespect to an axil of said first feed rotor.
 4. The anti-scorificationoven as claimed in claim 1, wherein said ignition bar is disposed undera bottom of said combustion chamber near said feed inlet thereof.
 5. Theanti-scorification oven as claimed in claim 1, wherein a tank wall isprovided surrounding said hearth, which with an outer surface of saidhearth, defines a boiling water tank.
 6. The anti-scorification oven asclaimed in claim 5, wherein said hearth is conical and an end having asmaller cross-sectional area is connected to a top plate of saidanti-scorification oven.
 7. The anti-scorification oven as claimed inclaim 6, wherein a chimney is provided in communicate with the hearthand spirally passing across said boiling water tank.
 8. Theanti-scorification oven as claimed in claim 6, wherein a plurality ofair supply holes are defined in said hearth and an air supply chamber isformed on an outside surface of the hearth surrounding said air supplyholes.
 9. The anti-scorification oven as claimed in claim 8, wherein anexhaust blower is provided at an exit of said chimney, a dust collectionbox is provided between said chimney and said exhaust blower, and aplurality of layers of dust collection nets are placed in said dustcollection box.
 10. The anti-scorification oven as claimed in claim 1,wherein said hopper is of cone shape and said second feed rotor isdisposed under said hopper.